Every budget cycle, I'm the one who gets asked to quote Anritsu test equipment for a mobile network field team. I'm not an RF engineer — I'm the procurement person who has to figure out whether the line item will survive finance review, whether the calibration certificate is current, and whether the engineers will still get parts in three years.
So these questions aren't from a datasheet. They're from purchase cycles, vendor calls, and a few lessons I learned the hard way. If you're about to buy an Anritsu PIM Master MW82119B, an Anritsu signal analyzer — or you just want to understand what the field techs are talking about — this is where I'd start.
Here's what people actually ask me:
The short answer: it finds bad connections that cause interference. PIM — passive intermodulation — happens when two strong transmit signals mix at a rusted, loose, or otherwise non-linear point in the RF path and create new signals that land in a receive band. A tower can have brand-new radios and still show a ghost interference problem because of one corroded jumper at the top of the mast.
The MW82119B is Anritsu's handheld PIM tester (the “PIM Master”). It sends a high-power test signal down the cable and antenna network and measures what comes back, so a tech can determine not just that PIM exists but roughly where it's coming from — distance-to-PIM. Ours gets used for DAS sweeps, macro site acceptance, and troubleshooting those repeat interference complaints. (The “Master” naming is very Anritsu, but after watching it save a five-hour tower climb, I get it.)
Industry PIM measurements are typically performed to the IEC 62037 series. If a contractor asks which standard to test to, that's the one to name.
If you asked me two years ago, I'd have said it simply: a PIM Master finds bad connections, a signal analyzer finds interference. That's still mostly true.
A PIM Master generates its own test signal and measures the intermodulation response of the network. An Anritsu signal analyzer — benchtop like the MS2840A, or a handheld spectrum analyzer — listens to what's already in the air: signals, noise, spurious emissions, interference across the band. They answer different questions.
Field teams usually need both. The signal analyzer tells you the network is clean; the PIM tester proves the passive components aren't creating their own noise. When engineers ask me to quote “an Anritsu signal analyzer,” my first question back is: benchtop or handheld? The budget is very different.
To be fair, a basic spectrum analyzer solves a surprising number of problems. PIM testing is the part that can't be faked.
What is a connector? In RF, it's the mechanical interface between a cable, an antenna, and a test instrument — and it's also the most common source of PIM in live networks. Loose connectors, cross-threaded connectors, dirty connectors, connectors with moisture inside: all of them create the non-linearity that turns two clean transmit signals into a distorted mess.
The types you run into most often:
Looking back, I should have ordered torque wrenches and connector cleaning kits with our first PIM Master. At the time, I figured the techs had their own. They didn't. The first “bad jumper” we flagged was actually a loose test-port connection on our own test cable — the PIM tester was right, and we didn't want to believe it (ugh).
Connector rules that will extend the life of your gear: clean before connecting, torque to spec, and retire visibly worn connectors instead of squeezing out one more site.
This question shows up because people search for “transparent smartphone” and land here. Are transparent phones real? Sort of. A company called Polytron showed a mostly-transparent phone prototype back around 2013, and Samsung and others have filed transparent-display patents since. Don't hold me to the exact model names — the concept resurfaces every few years, which is likely why you're reading about it.
How does it connect to Anritsu? Three ways. First, every phone has to be validated for radiated RF performance before shipping, which means OTA (over-the-air) test setups with signal analyzers measuring antennas across all bands. Second, transparent phones are arguably harder for RF engineers, because the transparent conductive films used in see-through displays are worse at radiating than solid metal. Third, the network side doesn't change — a transparent phone still connects to the same towers, and those towers still face the same PIM and interference problems. The device gets fancier (thankfully, the physics doesn't).
I have mixed feelings about used test equipment. On one hand, the savings are real — a well-cared-for used PIM Master can come in well under the price of a new one, and finance notices that. On the other, I watched a “deal” turn into a project delay when a used unit came back from calibration with high insertion loss, and the second-round repair costs ate the savings.
If you're considering used, here's my checklist:
There's something satisfying about getting a used unit with fresh calibration paperwork, though. After the back-and-forth of quotes and shipping, seeing the certificate arrive with the hardware — that's the payoff.
Price context: a new MW82119B with options was a mid-five-figure budget item when I last priced one in 2023 (don't hold me to today's number; tariffs have moved things around). If the used price looks too good to be true, the options are probably missing.
What was best practice in 2020 is not quite enough in 2025. When I started this role (back in 2021), PIM testing was mostly for new installs and annual maintenance. Now, with C-band, CBRS, and DAS densification, site acceptance expects handheld PIM and spectrum analysis in a single workflow. The connectors have changed too — 7-16 DIN and N-type still cover most sites, but 4.3-10 keeps appearing on new antennas.
The fundamentals haven't changed: clean connectors, correct torque, current calibration, and testing at realistic power levels. The execution has, though — the gear is lighter, faster, and more automated. I'd argue that's the real story of the last five years: PIM testing moved from a lab-only specialty to a routine field job. Good for us, because that's exactly what the networks require now.